A friend who likes to copy you

Hi!^^ I'm always bothered when a friend copy me, even if it's just a small thing. I have this friend who wasn't used to wearing one-piece dresses at the office. Then I started wearing those kinds of dress. A few weeks later, she started wearing the same kind of dress. It's a small and petty thing but still, I was bothered by it. I don't know, maybe I should be proud because I inspired her but I guess it bothered me because she never praised me or rather, she never told me she approved of it. And it felt like she did it because she envied me. I know it's wrong to think like this towards a friend but I can't help it. ..

Well,this is a not a good thing if she's not used to do that thing before. If my friend will start to copy from me,only recently,i will feel bad about it. It means she is not having self confidence of herself anymore. I had a friend way back before in my high school days. We are best of friends for many years and known each other since the age of 9. And when we enter high school life,we always do things or make things in common. Like,we wear same color of blouse when we go out. We grow our hair long and do same hair do. We bought same hair clips and same stuffs. Every little things from notebook,pens,bags and shoes we buy and wear same things. And for me this is fine becoz we had talked and enjoyed this matter.